Preparation of metallic Pd nanoparticles using supercritical CO2 deposition: An efficient catalyst for Suzuki cross-coupling reaction

2018 ◽  
Vol 20 (5) ◽  
Author(s):  
Burcu Tezcan ◽  
Fatma Ulusal ◽  
Asım Egitmen ◽  
Bilgehan Guzel
Keyword(s):  
Supercritical Co2 ◽  
Coupling Reaction ◽  
Cross Coupling ◽  
Pd Nanoparticles ◽  
Efficient Catalyst ◽  
Cross Coupling Reaction

Green chemical synthesis of Pd nanoparticles for use as efficient catalyst in Suzuki-Miyaura cross-coupling reaction

2018 ◽  
Vol 33 (3) ◽  
pp. e4758 ◽  
Author(s):  
Shreemoyee Phukan ◽  
Abhijit Mahanta ◽  
Dwipen Kakati ◽  
Md. Harunar Rashid
Keyword(s):  
Chemical Synthesis ◽  
Coupling Reaction ◽  
Cross Coupling ◽  
Pd Nanoparticles ◽  
Efficient Catalyst ◽  
Cross Coupling Reaction ◽  
Green Chemical Synthesis

scholarly journals Pd Nanoparticles Stabilized by Hypercrosslinked Polystyrene Catalyze Selective Triple C-C Bond Hydrogenation and Suzuki Cross-Coupling

2019 ◽  
Vol 2019 ◽  
pp. 1-7 ◽  
Author(s):  
Linda Zh. Nikoshvili ◽  
Nadezhda A. Nemygina ◽  
Tatiana E. Khudyakova ◽  
Irina Yu. Tiamina ◽  
Alexey V. Bykov ◽  
...  
Keyword(s):  
Phase Transfer ◽  
Aryl Halide ◽  
Coupling Reaction ◽  
Cross Coupling ◽  
Pd Nanoparticles ◽  
Hypercrosslinked Polystyrene ◽  
Reductive Activation ◽  
Pd Nanoparticle ◽  
Cross Coupling Reaction ◽  
Precursor Decomposition

This paper describes the synthesis of Pd-containing catalysts based on nonfunctionalized hypercrosslinked polystyrene via impregnation with Pd acetate. Developed Pd nanoparticulate catalyst allowed achieving conversion of aryl halide up to 90% in Suzuki cross-coupling reaction under mild conditions and at the absence of phase-transfer agents. During the selective hydrogenation of triple C-C bond of 2-methyl-3-butyn-2-ol, up to 96% selectivity with respect to corresponding olefinic alcohol was found at 95% conversion. The influences of the procedure of catalyst synthesis like precursor decomposition and reductive activation method on Pd nanoparticle formation are discussed.

scholarly journals A New Heterogeneous Catalyst Obtained via Supramolecular Decoration of Graphene with a Pd2+ Azamacrocyclic Complex

Molecules ◽  
2019 ◽  
Vol 24 (15) ◽  
pp. 2714 ◽  
Author(s):  
Matteo Savastano ◽  
Paloma Arranz-Mascarós ◽  
Maria Paz Clares ◽  
Rafael Cuesta ◽  
Maria Luz Godino-Salido ◽  
...  
Keyword(s):  
Heterogeneous Catalyst ◽  
Self Assembly ◽  
Room Temperature ◽  
Coupling Reaction ◽  
Cross Coupling ◽  
Assembly Process ◽  
Efficient Catalyst ◽  
Mild Conditions ◽  
Cross Coupling Reaction ◽  
Green Procedure

A new G-(H2L)-Pd heterogeneous catalyst has been prepared via a self-assembly process consisting in the spontaneous adsorption, in water at room temperature, of a macrocyclic H2L ligand on graphene (G) (G + H2L = G-(H2L)), followed by decoration of the macrocycle with Pd2+ ions (G-(H2L) + Pd2+ = G-(H2L)-Pd) under the same mild conditions. This supramolecular approach is a sustainable (green) procedure that preserves the special characteristics of graphene and furnishes an efficient catalyst for the Cu-free Sonogashira cross coupling reaction between iodobenzene and phenylacetylene. Indeed, G-(H2L)-Pd shows an excellent conversion (90%) of reactants into diphenylacetylene under mild conditions (50 °C, water, aerobic atmosphere, 14 h). The catalyst proved to be reusable for at least four cycles, although decreasing yields down to 50% were observed.

Phosphine-stabilized Pd nanoparticles supported on silica as a highly active catalyst for the Suzuki–Miyaura cross-coupling reaction

RSC Advances ◽  
2015 ◽  
Vol 5 (5) ◽  
pp. 3512-3520 ◽  
Author(s):  
Debojeet Sahu ◽  
Pankaj Das
Keyword(s):  
Active Catalyst ◽  
Coupling Reaction ◽  
Cross Coupling ◽  
Pd Nanoparticles ◽  
Highly Dispersed Silica ◽  
Simple Strategy ◽  
Highly Active ◽  
Cross Coupling Reaction ◽  
Highly Dispersed ◽  
Supported Pd

Highly dispersed silica-supported Pd nanoparticles were synthesizedviaa simple strategy. The material showed excellent catalytic activity for Suzuki–Miyaura reactions and could be reused several times.

A Highly Efficient Catalyst for the Suzuki Cross-coupling Reaction of 3-Chloro-5-oxadiazol-2-yl Pyridine

2014 ◽  
Vol 52 (6) ◽  
pp. 1748-1757 ◽  
Author(s):  
A. M. Sajith ◽  
K. K. Abdul Khader ◽  
A. Muralidharan ◽  
M. S. Ali Padusha ◽  
H. P. Nagaswarupa
Keyword(s):  
Coupling Reaction ◽  
Cross Coupling ◽  
Efficient Catalyst ◽  
Highly Efficient ◽  
Cross Coupling Reaction

scholarly journals Polyaniline-Supported Palladium(II)-Schiff Base Complex as Efficient Catalyst for Mizoroki-Heck Cross-Coupling Reaction

2014 ◽  
Vol 8 (2) ◽  
Author(s):  
Siti Kamilah Che Soh ◽  
Mustaffa Shamsuddin
Keyword(s):  
Mixed Solvent ◽  
Heterogeneous Reaction ◽  
Supported Catalyst ◽  
Schiff Base Complex ◽  
Coupling Reaction ◽  
Cross Coupling ◽  
Bet Surface Area ◽  
Efficient Catalyst ◽  
Cross Coupling Reaction ◽  
Supported Palladium

Mizoroki-Heck cross-coupling reaction of 4-bromoacetophenone with methyl acrylate were investigated as a model system of heterogeneous reaction in order to evaluate the performance of polyaniline supported N,N’-bis(3,5-di-tert-butylsalicylidene)propane-1,3-diaminepalladium(II) complex as catalyst. The reactions were carried out in both N,N-dimethylacetamide (DMAc) and water-DMAc mixed solvent. The performances of the catalyst in both media are comparable, giving more than 90 % conversion after 24 hours of reaction with 100 % selectivity and high isolated product yields of cinnamic esters were obtained. The used of mixed solvent gave more advantages such as less organic solvent was required and an enhanced recyclability in which the supported catalyst could be reusable at least four times without noticeable decrease in the product conversion. The properties of the catalyst was characterized by various techniques such as FTIR spectroscopy, TG-DTA, AAS, BET surface area, XRD and FESEM.

Hierarchical nanospheres based on Pd nanoparticles dispersed on carbon coated magnetite cores with a mesoporous ceria shell: a highly integrated multifunctional catalyst

2015 ◽  
Vol 44 (37) ◽  
pp. 16592-16601 ◽  
Author(s):  
Yinle Li ◽  
Zhuqing Zhang ◽  
Jianfeng Shen ◽  
Mingxin Ye
Keyword(s):  
Coupling Reaction ◽  
Cross Coupling ◽  
Pd Nanoparticles ◽  
Catalytic Performance ◽  
The Novel ◽  
Cross Coupling Reaction ◽  
Carbon Coated ◽  
Multifunctional Catalyst ◽  
Excellent Catalytic Performance

The novel multifunctional Fe3O4@C–Pd@CeO2 nanospheres show excellent catalytic performance in the Suzuki–Miyaura cross-coupling reaction and the reduction of 4-nitrophenol.

scholarly journals Microwave-Accelerated N-Acylation of Sulfoximines with Aldehydes under Catalyst-Free Conditions

Synthesis ◽  
2020 ◽  
Vol 52 (08) ◽  
pp. 1279-1286
Author(s):  
Kamal K. Rajbongshi ◽  
Srinivas Ambala ◽  
Thavendran Govender ◽  
Hendrik G. Kruger ◽  
Per I. Arvidsson ◽  
...  
Keyword(s):  
Free Radical ◽  
Microwave Irradiation ◽  
Coupling Reaction ◽  
Cross Coupling ◽  
Aromatic Aldehydes ◽  
Efficient Catalyst ◽  
Radical Initiator ◽  
Catalyst Free ◽  
Broad Scope ◽  
Cross Coupling Reaction

An efficient catalyst-free radical cross-coupling reaction between aromatic aldehydes and sulfoximines was developed. The reaction took place in the presence of N-bromosuccinimide as the radical initiator under microwave irradiation to afford the corresponding acylated sulfoximines in moderate to excellent yields (27 examples). This protocol proved to be rapid, easy to handle, and applicable to a broad scope of substrates.

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